2016 Groundwater and Surface Water Corrective Action Monitoring Plan

2016 Groundwater and Surface Water Corrective Action Monitoring Plan for the former ASARCO East Helena Facility, prepared April 2016. Download the PDF here.

Final Corrective Measures Study Work Plan

Now Available:
October 22, 2015 Former ASARCO East Helena Facility Final Corrective Measures Study Work Plan

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Final Addendum to Interim Measures Work Plan—2015 and 2016

Now Available:
March 23, 2016 Former ASARCO East Helena Facility Final Addendum to Interim Measures Work Plan—2015 and 2016

Download this file as a 8.4MB PDF

2015 Supplemental Contaminant Source Area Investigation Report

2015 Supplemental Contaminant Source Area Investigation at the Former East Helena Smelter Site. Prepared March 2016.

Download the PDF here.

Update on Corrective Measures Studies Activities

Now Available:
March 3, 2016 Technical Memo – Former ASARCO East Helena Facility Update on Corrective Measures Studies Activities

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Draft Addendum to Interim Measures Work Plan—2015 and 2016

Now Available:
January 14, 2016 Former ASARCO East Helena Facility Draft Addendum to Interim Measures Work Plan—2015 and 2016

Download this file as a 12.5MB PDF

EHECTIC Meeting Slides

Now Available:
September 30, 2015 EHECTIC Meeting Slides

Download this file as a 6.5MB PDF

Final Interim Measures Work Plan—2015 and 2016

Now Available:
May 29, 2015 Former ASARCO East Helena Facility Draft Interim Measures Work Plan—2015 and 2016

Download this file as a 65MB PDF File

2015 Groundwater and Surface Water Corrective Action Monitoring Plan

2015 Groundwater and Surface Water Corrective Action Monitoring Plan for the former ASARCO East Helena Facility, prepared March 2015. Download the PDF here.

Public Meeting Presentation

Comments on Draft 2015-2016 Interim Measures Work Plan
Due to EPA by March 6, 2015 (burns.betsy@epa.gov)

Download the Slides in PPTX Format (28MB)